Why does the function trigreduce cause the error "No error" in STACK?

Why does the function trigreduce cause the error "No error" in STACK?

by Evgeniy Grishenko -
Number of replies: 0

Why does the function trigreduce cause the error in STACK?

For example:
F: atan(sqrt(2/3)*(tan(x/2)-1));
R: trigreduce( F );

As a result error: "No error". What does it mean?

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